Machine-wrench



J. DAVIS. MACHINE WRENCH.

Patented Dec. 4

(No Model.)

Umrnn STATES j PATENT OFFICE.

JOHN Davis, on NEW nnnronn, MASSACHUSETTS.

MACHINE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 289,396, dated December 4:, 1883.

Application filed February 8, 1883. (No model.) i

To aZZ whom, it mag concern.-

Be it known that I, JOHN DAVIS, a citizen of the United States, residing atNew Bedford,

. in the county of Bristol and State of Massachusetts, have invented a .portable machinewrench for turning nuts wrench-tight on the bolts of fish-jointed railway-bars, of which the following is a specification.

My invention consists in a perpendicular frame in cranks, gear-wheels, socket, socketshaft, transverse rod, carrier, spiral springs, lever, and bolts.

Figure 1 is a perspective view of my invention applied to the fish-joint of a railroadrail, as seen when operated on a railroad. Fig. 2 is a perspective 'view of my invention removed from the rail. Fig. 3 is a transverse view of the socket, socket-shaft, nut in the socket, fish-bolt, lever, reciprocating rod, carrier, annular groove, and spiral springs. Fig. 4 is a longitudinal section of socket, socket-shaft, and countersink. Fig. 5 is a transverse section of end of frame, showing the groove for edge of the web of the rail.

In Fig. 1, A is the frame for supporting the devices of the wrench. It stands perpendicular on the rail, as seen in operation.

B B B B B are gear-wheels, which may be made of different diameters to produce desired power. operator from the cranks to the socket.

They conduct the power of the The socket-wheel is cast with rib on the right-hand edge of its periphery,to prevent it from being forced out of position by action of the traveler.

O O are cranks for operating the wrench, and need no specification.

D is the socket for the fish-bolt nuts.

E is the socket-shaft. It is four-square where it passes through the gear-wheel B, and reciprocates transversely through it when the nut is turned off or on the fish-bolt. It is round where it revolves in the frame A, and has a eountersunken hole, K, in its end at the bottom of the socket of sufficient depth to admit the end of the fish-bolt when the nut is turned onand the end of i the bolt protrudes through the nut.

F is a foot-lever. It serves two purposes.

G is a spiral spring around rod I. This rod has a long mortise perpendicular through it, in which projection e of lever F passes and presses against G when the foot of the operator rests on F.

J is the carrier, firmly secured to red I, and

rests in annular groove 1'.

H is a spiral spring. This spring forces the socket off the not after it has been turned on the bolt and the foot of the operator removed from lever F. The lower projection, g, of lever F is in shape of a cam, and when forced against the head of the fish-bolt j holds it in position, and also clamps the frame A to the rail by projection h. When 0 presses against spiral spring G, it yields till projection g is brought firmly against the head of the bolt, while the tension of G continues and forces the nut on the screw-thread of the fish-bolt, causing the screw to take.

9' j are fish-bolt and nut. (See Fig. 3.)

cl (I dare bolts which bind the frame together, and .on which the gear-wheels revolve.

f is the end of frame A, and rests on the web of the rail, which secures the machine in ac curate position. This end may be made with groove on to fit the edge of the web of the rail for more permanently securing the wrench to the rail.

D is the socket; E, the socket-shaft; K, the countersink in the end of the shaft at the bottom of the socket, which is of sufficient diameter and depth to admit the end of fish-bolt j when it protrudes through the nut and the nut is turned home.

By this invention any-sized nut, by change of socket, which will revolve above the web of the rail, may quickly be turned onto the fishbolt with any desired tightness to hold them without any locking device. nut which will revolve above the web of the rail may be turned on by driver instead of socket, if a channel be cut across the face of the nut for insertion of the driver.

Other devices than gear-wheels shown for transferring the power of the operator from the crank-shaft to the socket may be usedbevel-gear wheels with perpendicular shaft or endless chain, 820.

A round disk- Other devices may be used for pressing the nut against the end of the fish-bolt and securing the wrench to the rail and fish-bolt in position than the devices set forth. A screw for this purpose, or its equivalent, may be used.

The novelty and operation of my invention is so apparent that no further remark or specification need be made.

I claim 1. Frame A A A, gear-wheels B B B B B, cranks O 0, bolts (1 d (I, end of frame f, with groove m, and projection h, with lever F, rod I, carrier J, socket D, with annular groove 6, shaft E, with countersink K, and spiral springs G and H, as and for the purposes set forth and described.

2. Socket D, with its annular groove a, sock JNO. DAVIS. v

\Vitnesses:

SOUTHWARD POTTER, 2d, SIMEON N. Wnsr. 

